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Marco1955 · 11-19-2021

I’m installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R(heat) and the other RC(cooling) on the old thermostat. The Nest thermostat only has a connection for R . How do I connect the RC w...

Marco1955 · 12-22-2021

I could not get it to work with just two wires R+W using a Nest Thermostat. I even tried a Nest Power Connector and a separate 24v transformer. Couldn’t get it to work. I have a three wire thermostat cable so I’m going to get an electrician to try an...

Marco1955 · 11-20-2021

Thanks very much for your help.

Marco1955 · 11-19-2021

Last question. Will the Nest Learning work as well as the 2nd or 3rd gens?

Marco1955 · 11-19-2021

Yes that’s the one. Yeah I have a separate gas boiler and electric A/C unit with air handler unit which I assume is the reason for the two R wires.

Marco1955 · 11-19-2021

I have a Nest thermostat 1.4 Only has R terminal

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